You may want to be more specific about which text you are referring to. The link you provided rendered nearly identically for me between IE8 and Chrome 5.

Before even trying to find a fix for this "problem" you may want to re-evaluate WHY you want such small text, and whether it is absolutely necessary. For example: reading the tiny little copyright notices underneath those small pictures is pretty much a nightmare, and having them that small will probably not do your users any good.